PRODUCTS INFORMATION
Electrical Insulation Phenolic Cotton Cloth Laminated Rod Bar
The products are made of cotton which dipped into the phenolic aldehyde resin then heat pressed by mould.With high mechanical properties and processing properties.heat-resisting grade is E. It is Suitable for electrical equipment of insulation structure parts and transformer.
According to the properties ,they can be divided into three kinds:
3721,3723,3725,3721 is better than 3723< in> mechanical strength; 3723is an economical product versus 3721 ,3725 Similar to NEMA grade LE.
2,Technic Requirement
1. Guise:smooth,no air bubble,no oil stain& impurity,allow have inequality color, scrap,a little not level which does not interferethe usage;Diameter exceed 25mm,allow have crack which does not interferethe usage
2,Size:
| Dia |
Tolerance |
Dia |
Tolerance |
| 6~12 |
±0.5 |
>28~45 |
±1.5 |
| >12~16 |
±0.7 |
>45~65 |
±2.0 |
| >16~28 |
±1.0 |
>65~200 |
±2.3 |
3. Warp
| Dia(mm) |
warp(%) |
6
>6~19
>19 |
≤2.0
≤1.0
≤0.5 |
4,After machining it should be without interlayer and lose.
5,Physical,Mechanical and Dielectric performance
| Properties |
Unit |
Grade |
| Phenolic Cotton Cloth Molded Rod |
| 3721 |
3723 |
3725 |
| Flexural strength |
>= |
MPa |
118 |
88 |
83 |
| Tensile strength |
>= |
MPa |
78 |
- |
- |
Compressive strength
(Axial) |
>= |
MPa |
- |
- |
138 |
Breakdown voltage
Parallel to laminations
(in transformer oil) |
>= |
kV |
10
(20±<5°C>) |
- |
10
(20<5°C>) |
Insulation resistance
parallel to lamination
A: Under normal
conditions
D-24/23:Immersion
in water |
≥ |
W |
1.0×108
- |
- - |
- - |
| Density |
|
g/cm3 |
(1.25-1.40) |
Water absorption rate
(D-24/23, Φ25mm) |
<= |
% |
1.0 |
1.0 |
1.0 |
| Flammability |
|
Class |
- |
- |
- |
| Color |
|
- |
Natural |
| Reference standard |
|
- |
Q/TXXFR004-2009 |
Application
Products Show
Company Inforamtion
Xuchang Ruiyuan insulation material co.,ltd insist on the
idea " GOOD QULAITY, GOOD SERVICE ". it is establish 20years old.
It is located in Xuchang City, Henan Province, China. From 2010 year old our company begin deal international trade, based on the original business. Till now we import and export to many contries, such as United Kingdom, Germany, France, Ukrain, Bulgaria, Italy, India, Pakistan, Bangladesh, Korea, Brzil and so on.
Our manufacturing technique is leading in this field and well known in the world. Now there are more than 20 product facilities, and 105 staff, including 5 senior technical, 20 intermediate technical. Main products are manufactured on international standard.
Our products mainly used for transformer and electrical motor, we produces insulation paper, insulation board, insulation tape,insulation film and also sales PTFE FR4 PA6 and cable wire.
We will develop with you by best-quality products, warm-hearted service and mutually beneficial cooperation!
Package and shipping
Service
Audited Supplier 
){kind=link}